Rainwater everywhere on Earth has been found to contain dangerous levels of man-made 'forever chemicals' linked to cancer and other illnesses, a study has found.
Perfluoroalkyl and polyfluoroalkyl substances (PFAS) have many uses, including in firefighting foams, the non-stick coatings on frying pans, and textiles.
They are thought to get into the environment through industrial emissions, transfer from packaging, wastewater and evaporation from the foams.
Researchers from Stockholm University and ETH Zurich have conducted laboratory and field work on the presence and transport of PFAS for the past decade.
They claim they can be found in rainwater and snow in even the most remote locations on Earth, like Antarctica and Tibet.